youtube.ro is delegated to four nameservers, however all four delegated nameservers are missing in the zone. All nameservers are at
google.com. All of them are on the same IP network.
gmail.ie,
gmail.ge,
google.ae,
gmail.com,
dmarc.net and at least 27 other hosts share nameservers with this domain.
www.youtube.ro are subdomains to this hostname.
ro is a domain controlled by six nameservers. All of them are on different IP networks.